Just like the guy said in the first post, all it will boil down to, eventually, is personal opinion. Before i was sponsored i used to bleed my brakes with oil to save having to fork out £70 every six months (which i think is the main arguement for most people). But, now i get them cheaper i use water purely because the feel is great and much more responsive. Also, regarding what someone said earlier 'oil is slow' most of the time it is. But if you can master the art of bleeding a brake well with oil, which some of my friends have, then that would be awesome. Danny.